SuppScore

Ingredient

Vitamin D

Forms graded
9
Dose zones
5
Updated
1 Sept 2026

Every Vitamin D form, graded

9 forms scored on published absorption evidence. This is the comparison no supplement brand will publish about its own products.

  1. ×1.5Superior absorptionCholecalciferol, Vitamin D3, Vitamin D3 (cholecalciferol), Vitamin D3 (Food-Grown®), Vitamin D3 (lichen), Vitamin D3 (yeast)
  2. ×1.25Well absorbedNone graded here
  3. ×1Reference formVitamin D
  4. ×0.85Poor absorptionErgocalciferol, Vitamin D2

Multipliers are applied to each ingredient's dose score when a product is graded. How multipliers are assigned.

How much Vitamin D should you take?

SuppScore grades doses across evidence zones rather than against a single recommended figure. Scored information, not a recommendation.

  1. Zone 10 to 1 µg per dayLow dose
  2. Zone 21 to 4 µg per dayGeneral maintenance dose
  3. Zone 34 to 6 µg per dayFor deficiency or elevated need
  4. Zone 36 to 10 µg per dayFor deficiency or elevated need
  5. Zone 510 to 100 µg per dayPractitioner-grade dose

Zones describe what the evidence supports at a dose. They are not advice on what to take, and they do not replace a conversation with a doctor or pharmacist.

What is Vitamin D good for?

Products containing Vitamin D

Scored products that list it on the label, highest scoring first. Ordering is by SuppScore only. We have no commercial relationship with any brand shown.

References

  1. ods.od.nih.gov

Reviewed by the SuppScore advisory board

Every score on this page is computed from the SuppScore ingredient database using our published scoring rules. Our advisory board maintains those rules and the ingredient data behind them, and takes no payment from the brands whose products are scored.

Meet the advisory board · Last reviewed 1 Sept 2026

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